Summary of the invention
The invention provides a kind of high-power pressure break pump truck method for testing performance and test unit, its object one is the problem of the real output cannot determining high-power pressure break pump truck when solving high-power pressure break pump truck performance test; Its object two is to reduce security risk.
For achieving the above object, technical scheme of the present invention is:
A kind of high-power pressure break pump truck method for testing performance, is characterized in that: described method follows these steps to carry out:
1, the preliminary work before test, the circulation of falling liquid: the suction inlet of high-power pressure break pump truck and escape hole are connected on proving ground test device respectively, the set pressure of safety valve is set up to safety value, and guarantee that feed flow butterfly valve, circulation fluid butterfly valve, metering liquid butterfly valve, needle valve, stopcock, throttling valve are in unlatching conducting state, and close experimental liquid butterfly valve, start feed flow motor, feed flow driven by motor feed flow centrifugal pump starts infusion clear water, clear water is back in water pot by feed flow centrifugal pump along circulation fluid butterfly valve through water pot, and clear water cycling time is 3-5 minute;
2, feed flow is tested: by the cycling start of high-power pressure break pump truck, set up rotating speed and carry out full rotation speed operation to rated speed, by the control system that pressure break pump truck carries, pressure break pump truck is hung and fix on corresponding operation range, now open experimental liquid butterfly valve, close circulation fluid butterfly valve, open pressure control motor, pressure control driven by motor needle valve valve core movement starts to dam and builds the pressure, make the pressure increase between high-power pressure break pump truck and needle valve in pipeline to each gear rated high voltage, clear water is at water pot, feed flow butterfly valve, feed flow centrifugal pump, experimental liquid butterfly valve, high-power pressure break pump truck, high pressure four-way, needle valve, stopcock, throttling valve, decompressor, flow is taken into account between metering liquid butterfly valve and is completed circulation, rated high voltage liquid is through needle valve, after throttling valve and decompressor three grades of step-downs, the fluid pressure flowed in flowmeter drops to below flowmeter rated operating pressure, mounting safety valve on high pressure four-way, ensure that crushing test device works under safe pressure,
Discharge capacity Q after the discharge pressure P of 3 record pressure break pump trucks and step-down
0: record Martin Dai Kebiao upper gear box gear is from the data of the discharge pressure P of a grade to eight grades, and recording flowmeter upper gear box gear is from the discharge capacity Q of a grade to eight grades
0data;
4, high-power pressure break pump truck output power is calculated: utilize formula N
e=PQ brings the data that step 3 records into, calculates the real output of high-power pressure break pump truck under each range state, in formula: Q=Q
0
Q
0for the discharge capacity after the step-down of flowmeter survey, unit is m
3/ min;
Q is the average discharge of high-power pressure break pump truck, and unit is m
3/ min;
N
efor the real output of pressure break pump truck during test, unit is hp;
P is the pressure break pump truck discharge pressure that Martin Dai Kebiao measures, units MPa.
A kind of high-power pressure break pump truck performance test apparatus, comprises water pot, feed flow butterfly valve, circulation fluid butterfly valve, feed flow centrifugal pump, feed flow motor, experimental liquid butterfly valve, Martin Dai Kebiao, high pressure four-way, safety valve, needle valve, pressure control motor, stopcock, throttling valve, decompressor, flowmeter and metering liquid butterfly valve, water pot one end pipeline of this device is connected with feed flow centrifugal pump, feed flow butterfly valve associated line is equipped with, feed flow centrifugal pump is connected with feed flow motor, the escape hole of feed flow centrifugal pump is connected with experimental liquid butterfly valve with circulation fluid butterfly valve with pipeline respectively, the other end of circulation fluid butterfly valve is connected with water pot, the other end of experimental liquid butterfly valve is connected with the suction inlet of high-power pressure break pump truck, the escape hole pipeline of high-power pressure break pump truck is connected with high pressure four-way, and other three interfaces of high pressure four-way are respectively at Martin Dai Kebiao, safety valve is connected with needle valve, and the other end of safety valve is connected with sewage draining exit, and needle valve and pressure control motor are that axle is connected, and the other end of needle valve is connected with stopcock, and the other end of stopcock is in series with throttling valve successively, decompressor, flowmeter and metering liquid butterfly valve, the other end pipeline of metering liquid butterfly valve is connected with water pot.
The elliptical cylinder-shape tank of described water pot to be volume be 100-200m3.
Good effect of the present invention is: measurements and calculations accurately and effectively can go out the real output of high-power pressure break pump truck under the traditional performance experimental basis meeting high-power pressure break pump truck, sizing for high-power pressure break pump truck is dispatched from the factory and is provided the most direct test figure, test unit compact conformation simultaneously, does not need to take very large test area and safety coefficient is high.
Embodiment
The specific embodiment of the present invention is further illustrated below in conjunction with accompanying drawing 1.
Test condition: make a service test for 2500hp, 2000 types and 700 type pressure break pump trucks.
Embodiment 1(is see Fig. 1)
1, preliminary work before test, the circulation of falling liquid: by the suction inlet of high-power pressure break pump truck 7 and escape hole respectively with experimental liquid butterfly valve 6, high pressure four-way 9 is connected, the opening pressure of setting safety valve 10 is 105MPa, feed flow butterfly valve 2, circulation fluid butterfly valve 3, needle valve 11, stopcock 13, throttling valve 14 and metering liquid butterfly valve 17 are in unlatching conducting state, close experimental liquid dish valve 6, open feed flow motor 5, feed flow motor 5 drives feed flow centrifugal pump 4 to start infusion clear water, clear water is back in water pot 1 by feed flow centrifugal pump 4 along circulation fluid butterfly valve 3 through water pot 1, clear water cycling time is 5 minutes,
2, feed flow is tested: by the cycling start of high-power pressure break pump truck 7, set up pressure break pump truck rotating speed 1800 revs/min of full rotation speed operation, the gear of pressure break pump truck 7 upper gear box is progressively promoted to the most high-grade eight grades from deep low gear one grade, experimental liquid butterfly valve 6 is opened when deep low gear, close circulation fluid butterfly valve 3, open pressure control motor 12, drive needle valve 11 valve core movement, needle valve 11 is exported diminish, the pressure between high-power pressure break pump truck 7 and needle valve 11 in pipeline is made to be 140 MPa, if pressure is higher than 140 MPa, then safety valve 10 is opened, pressure in pipeline is reduced, when pressure recover is to 140 MPa, safety valve 10 cuts out.Clear water completes circulation between water pot 1, feed flow butterfly valve 2, feed flow centrifugal pump 4, experimental liquid butterfly valve 6, high-power pressure break pump truck 7, high pressure four-way 9, needle valve 11, stopcock 13, throttling valve 14, decompressor 15, flowmeter 16 and metering liquid butterfly valve 17.When the highly pressurised liquid of 140 MPa is after the 15 3 grades of step-downs of needle valve 11, throttling valve 14 and decompressor, the fluid pressure flowed in flowmeter 16 becomes 0.16 MPa.
3, the discharge capacity Q after the discharge pressure P of pressure break pump truck and step-down is recorded
0: under 140 MPa safe pressures, record Martin wears gram data of the discharge pressure P of table 8 upper gear box gear from one grade to eight grades under 140 MPa pressure, and recording flowmeter 16 upper gear box gear is from the discharge capacity Q of a grade to eight grades
0data, record data are as shown in table 1;
Table 1
4, high-power pressure break pump truck output power is calculated: utilize formula N
e=PQ brings the data that step 3 records into, calculates the real output of high-power pressure break pump truck under each range state, in formula: Q=Q
0, the output power calculated is as shown in table 2:
Table 2
Transmission case gear |
One grade |
Second gear |
Third gear |
Fourth gear |
Five grades |
Six grades |
Seven grades |
Eight grades |
Output power (hp) |
1499 |
1875 |
2355 |
2501 |
2502 |
2495 |
2542 |
2531 |
Embodiment 2(is see Fig. 1)
1, preliminary work before test, the circulation of falling liquid: by the suction inlet of high-power pressure break pump truck 7 and escape hole respectively with experimental liquid butterfly valve 6, high pressure four-way 9 is connected, the opening pressure of setting safety valve 10 is 105MPa, feed flow butterfly valve 2, circulation fluid butterfly valve 3, needle valve 11, stopcock 13, throttling valve 14 and metering liquid butterfly valve 17 are in unlatching conducting state, close experimental liquid dish valve 6, open feed flow motor 5, feed flow motor 5 drives feed flow centrifugal pump 4 to start infusion clear water, clear water is back in water pot 1 by feed flow centrifugal pump 4 along circulation fluid butterfly valve 3 through water pot 1, clear water cycling time is 4 minutes,
2, feed flow is tested: by the cycling start of high-power pressure break pump truck 7, set up pressure break pump truck rotating speed 1800 revs/min of full rotation speed operation, the gear of pressure break pump truck 7 upper gear box is progressively promoted to the most high-grade seven grades from deep low gear one grade, experimental liquid butterfly valve 6 is opened when deep low gear, close circulation fluid butterfly valve 3, open pressure control motor 12, drive needle valve 11 valve core movement, needle valve 11 is exported moderate, the pressure between high-power pressure break pump truck 7 and needle valve 11 in pipeline is made to be 105 MPa, if pressure is higher than 105 MPa, then safety valve 10 is opened, pressure in pipeline is reduced, when pressure recover is to 105MPa, safety valve 10 cuts out.Clear water completes circulation between water pot 1, feed flow butterfly valve 2, feed flow centrifugal pump 4, experimental liquid butterfly valve 6, high-power pressure break pump truck 7, high pressure four-way 9, needle valve 11, stopcock 13, throttling valve 14, decompressor 15, flowmeter 16 and metering liquid butterfly valve 17.When the highly pressurised liquid of 105MPa is after the 15 3 grades of step-downs of needle valve 11, throttling valve 14 and decompressor, the fluid pressure flowed in flowmeter 16 becomes 0.13 MPa.
3, the discharge capacity Q after the discharge pressure P of pressure break pump truck and step-down is recorded
0: under 105 MPa safe pressures, record Martin wears gram data of the discharge pressure P of table 8 upper gear box gear from one grade to seven grades under 105MPa pressure, and recording flowmeter 16 upper gear box gear is from the discharge capacity Q of a grade to seven grades
0data, record data are as shown in table 3;
Table 3
4, high-power pressure break pump truck output power is calculated: utilize formula N
e=PQ brings the data that step 3 records into, calculates the real output of high-power pressure break pump truck under each range state, in formula: Q=Q
0, the output power calculated is as shown in table 4:
Table 4
Transmission case gear |
One grade |
Second gear |
Third gear |
Fourth gear |
Five grades |
Six grades |
Seven grades |
Output power (hp) |
1526 |
1791 |
1788 |
1803 |
1803 |
1770 |
1816 |
Embodiment 3(is see Fig. 1)
1, preliminary work before test, the circulation of falling liquid: by the suction inlet of high-power pressure break pump truck 7 and escape hole respectively with experimental liquid butterfly valve 6, high pressure four-way 9 is connected, the opening pressure of setting safety valve 10 is 70MPa, feed flow butterfly valve 2, circulation fluid butterfly valve 3, needle valve 11, stopcock 13, throttling valve 14 and metering liquid butterfly valve 17 are in unlatching conducting state, close experimental liquid dish valve 6, open feed flow motor 5, feed flow motor 5 drives feed flow centrifugal pump 4 to start infusion clear water, clear water is back in water pot 1 by feed flow centrifugal pump 4 along circulation fluid butterfly valve 3 through water pot 1, clear water cycling time is 3 minutes,
2, feed flow is tested: by the cycling start of high-power pressure break pump truck 7, set up pressure break pump truck rotating speed 1700 revs/min of full rotation speed operation, the gear of pressure break pump truck 7 upper gear box is progressively promoted to the most high-grade five grades from deep low gear one grade, experimental liquid butterfly valve 6 is opened when deep low gear, close circulation fluid butterfly valve 3, open pressure control motor 12, drive needle valve 11 valve core movement, needle valve 11 is exported and becomes large, the pressure between high-power pressure break pump truck 7 and needle valve 11 in pipeline is made to be 70MPa, if pressure is higher than 70MPa, then safety valve 10 is opened, pressure in pipeline is reduced, when pressure recover is to 70MPa, safety valve 10 cuts out.Clear water completes circulation between water pot 1, feed flow butterfly valve 2, feed flow centrifugal pump 4, experimental liquid butterfly valve 6, high-power pressure break pump truck 7, high pressure four-way 9, needle valve 11, stopcock 13, throttling valve 14, decompressor 15, flowmeter 16 and metering liquid butterfly valve 17.When the highly pressurised liquid of 70MPa is after the 15 3 grades of step-downs of needle valve 11, throttling valve 14 and decompressor, the fluid pressure flowed in flowmeter 16 becomes 0.10 MPa.At feed flow test phase by the instrument on high-power pressure break pump truck 7, check engine water temperature, engine oil pressure, transmission case water temperature, transmission case oil pressure, large pump oil temperature, large pump oil pressure and hydraulic oil temperature whether within the scope of the fracturing pump performance parameter that provides of dispatching from the factory, the minimum and maximum speed of record fan under different pressures pattern;
3, the discharge capacity Q after the discharge pressure P of pressure break pump truck and step-down is recorded
0: under 70 MPa safe pressures, record Martin wears gram data of the discharge pressure P of table 8 upper gear box gear from one grade to five grades under 70MPa pressure, and recording flowmeter 16 upper gear box gear is from the discharge capacity Q of a grade to five grades
0data, record data are as shown in table 5;
Table 5
4, high-power pressure break pump truck output power is calculated: utilize formula N
e=PQ brings the data that step 3 records into, calculates the real output of high-power pressure break pump truck under each range state, in formula: Q=Q
0, the output power calculated is as shown in table 6:
Table 6
Transmission case gear |
One grade |
Second gear |
Third gear |
Fourth gear |
Five grades |
Output power (hp) |
567 |
557 |
558 |
549 |
530 |
The above is only non-limiting embodiment of the present invention; for the person of ordinary skill of the art; do not departing from the invention design with under the prerequisite of not making creative work, can also make some distortion and improvement, these all belong to protection scope of the present invention.